Envelop-sealefl



No. 622,528. Patented Apr. 4, I899. L. E. PANGBURN.

ENVELDP SEALER.

(Application filed Mar. 26, 1898.)

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Nrrn STATES PAT-EN men.

ENvELoP-sEALEs.

SPECIFICATION forming part of Letters Patent No. 622,528, dated April 4,1899.

Application filed March 26, 1898. Serial No. 675,259. (No model.)

T0 (0 whom it may concern:

Be it known that I, LYCURGUS E. Pane- BURN, a citizen of the UnitedStates, and a resident of the city of New Haven, county of New Haven,State of Connecticut, have invented anew and useful Improvement inEnvelop-Sealers, of which the following is a full, clear, and exactdescription.

In the drawings which accompany this specification and are a parthereof, Figure 1 represents a front view of an envelop-sealer embodyingmy invention. Fig. 2 represents a vertical section 011 line 03 01:,Fig. 1. Fig. 3 represents a plan view. Figs. 4, 5, and 6 representperspective views of detail portions of the machine.

Similar letters indicate similar parts of the different figures.

Referring to the drawings, A designates a casing or frame formed of theside pieces B B and the base 0. In the said side pieces are journaledthe parallel rollers D D, preferably composed of a wooden or othersuitable core witha rubber or other elastic covering. The journals ofthe upper roller D, which is directly above that of the other roller,have spring-bearings, the tension of which is regulated by the screws EE. The gear-wheels F F connect the rollers, so that they move in unison..Mounted on a shaft G on the side pieces B B is a cog-wheel H, meshingwith a pinion J on the shaft of the upper roller D and provided with acrank-handle K for rotating it and thereby the rollers D D. Othermechanism, such asa treadle, may be connected with said rollers forrotating them.

L designates the feeder and folder, which consists of a frame M, havingbearing-pieces M at its sides connected by the pivoted arms or pitmen NN to the wheels F and N on the shaft of the lower roller D. The saidframe M is supported on the rods P P, which are pivoted at their lowerends to the side pieces B B, so as to be moved to and from the rollers DD during the rotation of the rollers by means of said pitmen N N whichare eccentri'cally connected with said Wheels F and N, the bearings Mmoving in the slots Q Q in the side pieces B B. On the frame M is a tankor flnid-receptacle R, from which projects a moistening-pad or piece offelt S, which ple and is as follows: The envelop to be sealed is placedin the rack T, which is ad justed so that the fold of the flap of theenvelop is in line with the space between the rollers D D, the flapfalling toward or against the concave portion of the feeder on which isthe moistening-felt S. The cog-wheel H is then rotated, so that thepinion J and the rollers D D are revolved. This causes the wheels F andN to move the pitmen N N so as to cause the feeder L to approach therollers and its lower front edge to engage the fold of the envelop andpush the latter between the rollers, the flap coming in contact with themoistening-felt as the concave'portion of the frame approaches the upperroller D, whereby the gummed portion of said flap is moistened. Theparts are so connected that the furtherrotation of the cog-wheel I-Icauses the feeder to recede from the rollers, while the envelop is drawnbetween the latter and the flap is pressed against the back of theenvelop, and thereby reliably secured to the same. The further rotationof the rollers carries the envelop entirely between them, discharging iton the opposite side thereof. Owing to the spring bearings of the upperroller the latter automatically adjusts itself, so that envelops havingcontents of different thicknesses are accommodated. Envelops can besuccessively fed to the machine as fast as one has passed between therollers, and as a high rate of speed for the rotation of the rollers ispossible it will be apparent that the efficiency of the device orquantity of work that can be performed by it is very great.

It will be noticed that the machine as de scribed is of comparativelyfew parts, easy of construction, while durable in character and highlyeflicient in operation. 1

Having thus described my invention, what I wish to claim and secure byLetters Patent 1. An envelop-sealer having two parallel rollers, and afeeding and folding device with a moistening-pad thereon; and mechanismfor operating said feeding and folding device, said feeding and foldingdevice being in front of and adapted to deliver envelops between saidrollers, substantially as described.

2. In an envelop-sealer, the combination of a frame having two parallelrollers journaled thereon, a reciprocating feeding-frame with amoistening-pad thereon suitably supported in front of the space betweensaid rollers; mechanism for operating said reciprocating feedingframe,and a stationary envelopholder adjacent to and in front of said rollers.

3. In an envelop-sealer, a frame with two parallel rollers journaledthereon and having connecting-gearing,a feeding device mounted onpivoted rods in front of said rollers, pitmen connected with saidfeeding device and with the shaft of one of said rollers, and anenvelop-holder adjacent to and between said feeding device and one ofsaid rollers.

4. In an envelop-sealer, a frame with side pieces, two parallel rollersjournaled in said side pieces and having connecting-gearing, operatingmechanism for said rollers, a feeding and folding frame having amoistening device thereon, and provided with bearings movable in slotsin said side pieces, pitmen connected with said bearings and with wheelson one of said roller-shafts, and pivoted rods on which said feeding andfolding frame is supported, said frame having a front lower edgeopposite the space between said rollers.

In an envelop-sealer, parallel rollers,and a reciprocating feeding andfolding frame having a concave front portion with a moistening padthereon, and provided with a front lower edge opposite the space betweensaid rollers.

6. In an envelop-sealer, a frame with two parallel rollers thereon, afeeding and folding device suitably supported, in front of said rollersand mechanism substantially as described, connected with one of saidrollers and with said feeding and folding device for rotating saidrollers and reciprocating said feeding and folding device in unison.

Dated March 7, 1898.

LYCURGUS E. PANGBURN. Witnesses:

WALTER E. ERIsBE, AsA O. BUSHNELL.

